The 8mm Ultra Wide Angle f/3.5 Fisheye Lens for Pentax K from Rokinon gives you a 180° view with dramatic, exaggerated perspective when used with an APS-C camera, or a powerful circular image floating in the frame when used with a full frame digital camera or 35mm film camera. With hybrid aspherical lenses and multi-layer coating, you will produce sharply defined images with a minimum of flare and ghosting. The 8mm lens focuses as close as 1' (30.48 cm) from the lens, and has a built-in petal lens hood.